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Table 2 Experimental variables

From: Implementation by simulation; strategies for ultrasound screening for hip dysplasia in the Netherlands

Experimental variables  
A. Number of portable US machines 1. As many as necessary US machines
2. Limited number of US machines
3. Externally organized (no US machines purchased)
B. Consultation 1. Integrated consultation with regular consultation at the age of three months
2. Extra consultation
C. Screener 1. Infant health care physician
2. Infant health care nurse
3. Radiographic technician (RT)
4. Medical specialist (radiologist or orthopedic surgeon)
D. Location and time 1. Daytime at IHC
2. Organized in buildings not owned by IHC (external)
3. Organized in evening hours at IHC.